+/**
+ * Pre-write operation, currently only supporting strong pullups.
+ * Program the hardware for a strong pullup, if one has been requested and
+ * the hardware supports it.
+ *
+ * @param dev the master device
+ */
+static void w1_pre_write(struct w1_master *dev)
+{
+ if (dev->pullup_duration &&
+ dev->enable_pullup && dev->bus_master->set_pullup) {
+ dev->bus_master->set_pullup(dev->bus_master->data,
+ dev->pullup_duration);
+ }
+}
+
+/**
+ * Post-write operation, currently only supporting strong pullups.
+ * If a strong pullup was requested, clear it if the hardware supports
+ * them, or execute the delay otherwise, in either case clear the request.
+ *
+ * @param dev the master device
+ */
+static void w1_post_write(struct w1_master *dev)
+{
+ if (dev->pullup_duration) {
+ if (dev->enable_pullup && dev->bus_master->set_pullup)
+ dev->bus_master->set_pullup(dev->bus_master->data, 0);
+ else
+ msleep(dev->pullup_duration);
+ dev->pullup_duration = 0;
+ }
+}
+